Platvis, a Dutch company specialising in frozen fish products, was seeking to increase its capacity by processing individual retail packs weighing from 250g to 1kg. Following investigations into freezing systems which allow the maintenance of good product quality and keep weight loss to a minimum, technical manager Nico Kwakman specified hybrid tunnel (HT) multi-belt freezing equipment from Starfrost.
The HT combines the look of a fluidised bed tunnel with the controlled air flow and efficiency benefits of a spiral freezing system. A triple-belt version was designed and custom-built by Starfrost at the Platvis site in Edam. It features three 1.4m-wide conveyor belts that can be configured as a single lane or operated independently at various speeds in order to allow a variety of products requiring different retention times to be processed simultaneously.
Just over 10m long, the machine is enabling Platvis to freeze up to 600kg of fish products every hour, and it provides the flexibility for products to be frozen, glazed, and re-frozen as required.
The HT system is available with up to five belts and is capable of hourly processing rates from 50kg to 700kg depending on product types and required retention times. The system can be adapted as required by users to harden, chill, freeze, or thaw meat, poultry, dairy products, fruit, and vegetables, as well as fish.
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